qcacmn: Add new WDI event for HOST_SW_EVENT

Add new WDI event for WDI_EVENT_HOST_SW_EVENT which will be used by
pktlog.

Change-Id: Ie4e6a167e1118b430f418582af7ea9a8eb3aaf59

dp/inc/cdp_txrx_stats_struct.h

@@ -375,6 +375,7 @@ enum WDI_EVENT {
 	WDI_EVENT_PKT_CAPTURE_OFFLOAD_TX_DATA,
 	WDI_EVENT_RX_CBF,
 	WDI_EVENT_PKT_CAPTURE_PPDU_STATS,
+	WDI_EVENT_HOST_SW_EVENT,
 	/* End of new event items */
 	WDI_EVENT_LAST
 };